noun · miscellaneous military forces or troops of varied allegiances that do not belong to a regular army

这支杂牌军虽然装备简陋，但战斗力不容小觑。

noun · a group of non-professionals or people with diverse, unofficial backgrounds working together

他手下这帮杂牌军虽然没有正规经验，但干起活来很有拼劲。