Germanic marker is R1b1a2a1a1 S21 after it conquered areas in central Europe which had hg I subclades(I1a1, I1a3, I1a4, I1b, and I2a2), then southern Scandinavia (mainly I1a2 L22 subclades) Later Germanic tribes had hg's from those native people. R1a1a1b1 Z283 people who spoke the ancestral language to Balto-Slavic migrate out of Yamna culture in Russia and Ukraine and conquered most of eastern and central Europe and southern Scandinavia(including Finland) they were the Corded ware culture people started about 5,000ybp. R1a1a1b2 Z93 people who spoke the ancestral language to Indo Iranian and probably Tocharian conquered a huge chunk of Asia. They also migrated out of Yamna culture probably in northern Russia. Over time from about 5,000-3,000ybo they Dominated almost all the land from the Caspian sea-west China and central Siberia, Indus valley-Iran and Iraq. R1b1a2a1a L11 Germanic Italo Celts some people don't believe this but I do. Migrating out of some where in eastern Europe arriving in western Europe in 3,000bc and eventulley spread conquering all of western Europe and southern Scandinavia. The Turkic tribes also were very successful warriors and conquerors in the ancient world they would have had mainly Mongliod Y DNA haplogroups. Then of course there are many Great warrior cultures and conquerors from the ancient Near east like Babylonians and Persians who would have been mainly under hg J Persians since Indo Iranians speakers would have had a pretty good amount of R1a1a1b2 Z93. I don't think you can associate Y DNA with the most beast warriors in ancient times I doubt it has anything to do with it. The Vikings are a good example hg I warrior culture. There were also some great Chinese warriors like Sun Tzu so hg O and Japanese Samuri.