vlastak

Position: Executive officer

Joined: 2014-04-08

Stats
GM X
GM VIII
GM VI
Company statistics
Team statistics
Skirmishes statistics
Stronghold statistics
Share
Other

Overall Stats

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	25922		0		2		4
Ø Tier	6,90		0,00		8,00		8,00
Victories	13456	51,91%	0	0,00%	0	0,00%	0	0,00%
Defeats	12270	47,33%	0	0,00%	2	100,00%	4	100,00%
Draws	196	0,76%	0	0,00%	0	0,00%	0	0,00%
Battles survived	8074	31,15%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	21970	0,85	0	0,00	0	0,00	0	0,00
Destruction ratio	1,23		0,00		0,00		0,00
Tanks spotted	27635	1,07	0	0,00	2	1,00	4	1,00
Damage dealt	895,92		0,00		0,00		0,00
Capture points	35525	1,37	0	0,00	0	0,00	0	0,00
Defense points	20665	0,80	0	0,00	0	0,00	0	0,00
Experience	484,96		0,00		97,50		124,25
WN7	1119,76		0,00		-99,24		-99,24
WN8	1266,86		0,00		0,00		0,00
WN9	567,48		0,00		0,00		0,00

Total
Battles	25922
Ø Tier	6,90
Victories	13456	51,91%
Defeats	12270	47,33%
Draws	196	0,76%
Battles survived	8074	31,15%
Tanks destroyed	21970	0,85
Destruction ratio	1,23
Tanks spotted	27635	1,07
Damage dealt	895,92
Capture points	35525	1,37
Defense points	20665	0,80
Experience	484,96
WN7	1119,76
WN8	1266,86

Past 24 hours
Battles	0
Ø Tier	0,00
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00
WN7	0,00
WN8	0,00

Past 7 days
Battles	2
Ø Tier	8,00
Victories	0	0,00%
Defeats	2	100,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	2	1,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	97,50
WN7	-99,24
WN8	0,00

Past 30 days
Battles	4
Ø Tier	8,00
Victories	0	0,00%
Defeats	4	100,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	4	1,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	124,25
WN7	-99,24
WN8	0,00

Created at:

Last battle:

Last update:

Globalmap Absolute X

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	1		0		0		0
Victories	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Defeats	1	100,00%	0	0,00%	0	0,00%	0	0,00%
Draws	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Battles survived	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	0	0,00	0	0,00	0	0,00	0	0,00
Destruction ratio	0,00		0,00		0,00		0,00
Tanks spotted	2	2,00	0	0,00	0	0,00	0	0,00
Damage dealt	1.565,00		0,00		0,00		0,00
Capture points	0	0,00	0	0,00	0	0,00	0	0,00
Defense points	0	0,00	0	0,00	0	0,00	0	0,00
Experience	58,00		0,00		0,00		0,00

Total
Battles	1
Victories	0	0,00%
Defeats	1	100,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	2	2,00
Damage dealt	1.565,00
Capture points	0	0,00
Defense points	0	0,00
Experience	58,00

Past 24 hours
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 7 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 30 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Globalmap Champion VIII

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	0		0		0		0
Victories	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Defeats	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Draws	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Battles survived	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	0	0,00	0	0,00	0	0,00	0	0,00
Destruction ratio	0,00		0,00		0,00		0,00
Tanks spotted	0	0,00	0	0,00	0	0,00	0	0,00
Damage dealt	0,00		0,00		0,00		0,00
Capture points	0	0,00	0	0,00	0	0,00	0	0,00
Defense points	0	0,00	0	0,00	0	0,00	0	0,00
Experience	0,00		0,00		0,00		0,00

Total
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 24 hours
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 7 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 30 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Globalmap Middle VI

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	2		0		0		0
Victories	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Defeats	2	100,00%	0	0,00%	0	0,00%	0	0,00%
Draws	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Battles survived	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	1	0,50	0	0,00	0	0,00	0	0,00
Destruction ratio	0,50		0,00		0,00		0,00
Tanks spotted	7	3,50	0	0,00	0	0,00	0	0,00
Damage dealt	595,50		0,00		0,00		0,00
Capture points	0	0,00	0	0,00	0	0,00	0	0,00
Defense points	0	0,00	0	0,00	0	0,00	0	0,00
Experience	84,50		0,00		0,00		0,00

Total
Battles	2
Victories	0	0,00%
Defeats	2	100,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	1	0,50
Destruction ratio	0,50
Tanks spotted	7	3,50
Damage dealt	595,50
Capture points	0	0,00
Defense points	0	0,00
Experience	84,50

Past 24 hours
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 7 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 30 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Company statistics

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	2		0		0		0
Victories	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Defeats	2	100,00%	0	0,00%	0	0,00%	0	0,00%
Draws	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Battles survived	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	0	0,00	0	0,00	0	0,00	0	0,00
Destruction ratio	0,00		0,00		0,00		0,00
Tanks spotted	0	0,00	0	0,00	0	0,00	0	0,00
Damage dealt	455,00		0,00		0,00		0,00
Capture points	0	0,00	0	0,00	0	0,00	0	0,00
Defense points	0	0,00	0	0,00	0	0,00	0	0,00
Experience	76,00		0,00		0,00		0,00

Total
Battles	2
Victories	0	0,00%
Defeats	2	100,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	455,00
Capture points	0	0,00
Defense points	0	0,00
Experience	76,00

Past 24 hours
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 7 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 30 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Team statistics

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	65		0		0		0
Victories	27	41,54%	0	0,00%	0	0,00%	0	0,00%
Defeats	38	58,46%	0	0,00%	0	0,00%	0	0,00%
Draws	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Battles survived	22	33,85%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	28	0,43	0	0,00	0	0,00	0	0,00
Destruction ratio	0,65		0,00		0,00		0,00
Tanks spotted	64	0,98	0	0,00	0	0,00	0	0,00
Damage dealt	950,55		0,00		0,00		0,00
Capture points	0	0,00	0	0,00	0	0,00	0	0,00
Defense points	245	3,77	0	0,00	0	0,00	0	0,00
Experience	402,74		0,00		0,00		0,00

Total
Battles	65
Victories	27	41,54%
Defeats	38	58,46%
Draws	0	0,00%
Battles survived	22	33,85%
Tanks destroyed	28	0,43
Destruction ratio	0,65
Tanks spotted	64	0,98
Damage dealt	950,55
Capture points	0	0,00
Defense points	245	3,77
Experience	402,74

Past 24 hours
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 7 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 30 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Skirmishes statistics

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	107		0		0		0
Victories	36	33,64%	0	0,00%	0	0,00%	0	0,00%
Defeats	71	66,36%	0	0,00%	0	0,00%	0	0,00%
Draws	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Battles survived	32	29,91%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	75	0,70	0	0,00	0	0,00	0	0,00
Destruction ratio	1,00		0,00		0,00		0,00
Tanks spotted	142	1,33	0	0,00	0	0,00	0	0,00
Damage dealt	648,67		0,00		0,00		0,00
Capture points	94	0,88	0	0,00	0	0,00	0	0,00
Defense points	277	2,59	0	0,00	0	0,00	0	0,00
Experience	205,18		0,00		0,00		0,00

Total
Battles	107
Victories	36	33,64%
Defeats	71	66,36%
Draws	0	0,00%
Battles survived	32	29,91%
Tanks destroyed	75	0,70
Destruction ratio	1,00
Tanks spotted	142	1,33
Damage dealt	648,67
Capture points	94	0,88
Defense points	277	2,59
Experience	205,18

Past 24 hours
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 7 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 30 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Stronghold defense statistics

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	0		0		0		0
Victories	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Defeats	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Draws	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Battles survived	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	0	0,00	0	0,00	0	0,00	0	0,00
Destruction ratio	0,00		0,00		0,00		0,00
Tanks spotted	0	0,00	0	0,00	0	0,00	0	0,00
Damage dealt	0,00		0,00		0,00		0,00
Capture points	0	0,00	0	0,00	0	0,00	0	0,00
Defense points	0	0,00	0	0,00	0	0,00	0	0,00
Experience	0,00		0,00		0,00		0,00

Total
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 24 hours
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 7 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 30 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

World of Tanks Profile

Anzeigen

Tanks (81)

Tank Name	Tier	Ø Damage	Ø XP	Battles	Victories	WN8
Churchill I	5	673,54	479	5257	57,24%	1730,13
M6	6	850,43	527	1693	53,69%	1592,65
T29	7	1170,48	627	1554	55,34%	1712,64
Black Prince	7	769,36	461	1206	53,23%	1002,11
Caernarvon	8	1029,39	501	1182	49,58%	1143,71
Tortoise	9	1618,85	588	926	49,46%	1343,35
Conqueror	9	1361,60	529	926	45,57%	1155,40
AT 15	8	1237,01	602	914	52,74%	1437,49
M103	9	1366,67	552	906	50,66%	1313,19
M40/M43	8	1161,49	477	852	50,35%	1425,39
Cromwell	6	599,12	468	826	55,33%	1228,20
FV215b	10	1458,71	522	778	45,12%	1023,44
M12	7	877,17	425	681	51,40%	1251,41
AMX 13 90	9	494,87	456	535	47,66%	559,53
Comet	7	666,54	464	521	52,78%	1039,74
T110E5	10	1616,03	545	465	49,46%	1259,00
FV215b (183)	10	1473,06	473	463	47,95%	1048,98
M53/M55	9	1169,97	491	450	50,00%	1202,89
AT 8	6	741,80	496	434	53,46%	1452,25
Centurion Mk. I	8	962,59	542	429	49,88%	1292,29
AT 7	7	1032,39	567	425	54,35%	1422,48
Bat.-Châtillon 25 t AP	9	856,82	498	331	45,02%	700,34
AMX 13 75	7	460,62	456	325	46,77%	821,72
AMX ELC bis	5	244,90	337	308	48,05%	694,41
T32	8	1033,76	571	301	49,83%	1138,37
Centurion Mk. 7/1	9	843,55	439	293	37,20%	545,64
Churchill VII	6	469,64	300	288	45,49%	679,07
AMX 12 t	6	468,67	423	268	50,75%	1276,29
Crusader	6	292,43	321	268	55,97%	812,64
Alecto	4	148,36	157	195	43,08%	173,72
M41 HMC	5	522,82	352	168	46,43%	801,65
Bat.-Châtillon 25 t	10	958,56	451	160	40,63%	548,06
AT 2	5	365,04	272	153	47,71%	779,01
M44	6	724,57	422	146	54,11%	1420,32
T1 Heavy Tank	5	540,14	388	139	54,68%	1170,68
Matilda	4	327,51	275	117	56,41%	909,49
M3 Lee	4	258,58	245	89	49,44%	960,55
T2 Medium Tank	2	223,42	240	84	55,95%	1431,71
Vickers Medium Mk. III	3	141,25	150	84	41,67%	355,98
BT-7 artillery	3	161,78	231	67	56,72%	556,98
43 M. Toldi III	3	152,81	247	64	53,13%	683,46
Light Mk. VIC	2	140,12	259	59	69,49%	731,11
T92 HMC	10	784,48	504	54	46,30%	472,57
Valentine AT	4	152,25	143	53	39,62%	187,63
M37	4	318,74	236	46	56,52%	1099,29
M2 Medium Tank	3	251,74	260	43	58,14%	1088,38
T3 HMC	2	221,65	213	43	44,19%	962,43
Super Conqueror	10	845,35	540	34	44,12%	378,89
Universal Carrier 2-pdr	2	108,47	101	30	26,67%	223,32
Chi-Ni	2	142,46	250	26	84,62%	814,39
StuG IV	5	333,52	315	23	47,83%	765,28
Pz.Kpfw. II Ausf. D	2	121,18	295	22	45,45%	374,81
T1 Cunningham	1	63,79	100	19	31,58%	119,97
M7 Priest	3	115,78	135	18	22,22%	38,13
T1 HMC	2	86,06	122	18	61,11%	415,93
T2 Light Tank	2	85,61	200	18	44,44%	176,67
Vickers Medium Mk. I	1	86,06	106	16	43,75%	235,31
MS-1	1	39,94	120	16	68,75%	247,25
L-60	2	66,75	192	12	50,00%	175,08
Vickers Medium Mk. II	2	113,92	95	12	33,33%	303,35
Renault FT	1	55,27	118	11	45,45%	101,45
T28 Concept	7	903,50	395	10	30,00%	1051,27
M24E2 Super Chaffee	6	12,40	271	10	60,00%	208,91
Super Hellcat	7	0,00	162	10	30,00%	0,00
Bat.-Châtillon 12 t	8	64,33	286	6	33,33%	0,00
Strv fm/21	1	80,67	52	6	0,00%	168,46
Patton the Tank	9	0,00	276	6	50,00%	124,85
ARL 44	6	0,00	225	4	75,00%	261,00
Kolohousenka	1	97,50	200	4	50,00%	347,08
Renault NC-31	1	130,00	59	3	0,00%	474,86
LTP	3	100,33	220	3	66,67%	443,40
Leichttraktor	1	66,00	101	3	33,33%	29,71
KV-1SA	5	0,00	154	2	50,00%	107,11
Pz.Kpfw. IV Ausf. F2	5	0,00	113	2	50,00%	110,55
T7 Combat Car	2	77,00	164	2	50,00%	206,01
VK 28.01 mit 10,5 cm L/28	6	0,00	80	2	0,00%	0,00
Renault Otsu	1	111,00	133	1	0,00%	372,09
Dicker Max	6	0,00	31	1	0,00%	0,00
Type 3 Chi-Nu Kai	5	495,00	225	1	0,00%	940,08
4TP	1	21,00	107	1	100,00%	261,00
Fiat 3000	1	245,00	121	1	0,00%	948,32

Graphs

WN8

Anzeigen

Clan history

[R-U-M] Plachetnice z Božkova

Position: Executive officer

Joined: 2014-04-08

vlastak

Overall Stats

Globalmap Absolute X

Globalmap Champion VIII

Globalmap Middle VI

Company statistics

Team statistics

Skirmishes statistics

Stronghold defense statistics

Share

Tanks (81)

Graphs

WN8

Clan history