block and pulley

cylinder block (engine block)

feed block slide (feed-block-actuating slide)

control cable pulley fairlead

crankshaft fan pulley

inner driven pulley distance piece

pulley bracket

cable pulley fairlead

pulley guard pin

pulley

observation and fields of fire, avenues of approach, key and decisive terrain,obstacles, and cover and concealment (OAKOC)

block and withdraw

road block and obstacle service

block diagram

block face

block supplies

locking block

TNT block

breech block pivoted below the level of the chamber

disrupt, fix, turn or block the enemy force

all-round vision block

back on the block

block off

direct vision block

surveillance vision block

trunnion block

vision block

advanced building-block for large-area exploitation

basic building block

basic building block module

building block

building block approach

building block organization concept