sentences:  The two packs had incompatible combat and cargo packs due to different release buckles.The new two-part design, based on the Marine M-1941 jungle pack, used a much smaller back pack (for rations, clothes, ammunition, and messkit), and a separate cargo bag that attached to the bottom for extra clothes, shoes, and miscellaneous other items.The upper field pack had the same type of grommet tabs and loops as the M-1928 for attaching a bayonet and entrenchment tool plus straps for securing a "horseshoe" bedroll.