百團大戰

Hundred Regiments offensive of August-December 1940, a large scale offensive against the Japanese by the communists

hundred / numerous / all kinds of

round / lump / ball / to roll into a ball / to gather / regiment / group / society / classifier for a lump or a soft mass: wad (of paper), ball (of wool), cloud (of smoke)

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

war / to wage war

to fight / fight / war / battle