▁course , ▁ ▁some ▁soldiers ▁are ▁selected ▁to ▁attend ▁the ▁tank ▁commander ' s ▁course . ▁The ▁tank ▁commander ' s ▁course ▁last s ▁about ▁three ▁and ▁a ▁half ▁months , ▁ ▁during ▁which ▁cad ets ▁train ▁in ▁the ▁two ▁other ▁special ties ▁that ▁they ▁did ▁not ▁train ▁in ▁earlier , ▁and ▁in ▁the ▁principles ▁of ▁command , ▁ ▁control , ▁ ▁navigation , ▁ ▁and ▁assess ment ▁of ▁situations . ▁Following ▁the ▁end ▁of ▁the ▁course , ▁ ▁exception al ▁soldiers ▁are ▁offered ▁the ▁opportunity ▁to ▁attend ▁the ▁officer ' s ▁course , ▁ ▁which ▁last s ▁ 7 ▁months , ▁during ▁which ▁they ▁learn ▁to ▁command ▁an ▁arm ored ▁division ▁in ▁close ▁co operation ▁with ▁other ▁field ▁units . ▁▁ ▁After ▁Arm ored ▁Corps ▁soldiers ▁complete ▁their ▁active ▁service , ▁ ▁they ▁are ▁moved ▁into ▁reserve ▁units . ▁Active ▁res erv ists ▁in ▁the ▁Arm or ▁Corps ▁attend ▁training ▁exer cis es ▁once ▁a ▁year . ▁ ▁Dis band ed ▁units ▁▁ 2 1 1 th ▁Brigade ▁Also ▁known ▁as ▁the ▁Y ish ai ▁( ac ron ym ▁for ▁" Gu ard ians ▁of ▁Jerusalem ▁Unit "), ▁during ▁the ▁Leb anon ▁War ▁of ▁ 1 9 8 2 , ▁it ▁was ▁fam ously ▁led ▁by ▁Colonel ▁Eli ▁Ge va , ▁who , ▁during ▁the ▁Sie ge ▁of ▁Be ir ut , ▁refused ▁to ▁lead ▁his ▁soldiers ▁into ▁the ▁city ▁for ▁moral ▁reasons . ▁He ▁was ▁dismiss ed ▁from ▁the ▁army , ▁and ▁the ▁brig ade ▁itself ▁was ▁dissol ved ▁in ▁the