Question: what has been the longest war in history
Answer: War Start date End date Duration Reconquista 000000000718 - 01 - 01 - 0000 718 - 000000000722 - 01 - 01 - 0000 722 000000001492 - 01 - 01 - 0000 1492 774 years Roman -- Persian Wars - 999999999946 - 01 - 01 - 0000 54 BC 000000000628 - 01 - 01 - 0000 628 681 years Germanic Wars - 999999999887 - 01 - 01 - 0000 113 BC 000000000569 - 01 - 01 - 0000 569 681 years Ottoman wars in Europe 000000001265 - 01 - 01 - 0000 1265 000000001918 - 01 - 01 - 0000 1918 653 years Serbian -- Turkish conflict 000000001312 - 01 - 01 - 0000 1312 000000001918 - 01 - 01 - 0000