▁Ott om ans ▁had ▁joined ▁sides ▁with ▁the ▁Germ ans , ▁and ▁A aron so hn ▁fe ared ▁the ▁Jews ▁would ▁suffer ▁the ▁same ▁fate ▁as ▁the ▁Armen ians ▁under ▁the ▁Tur ks . ▁T ogether ▁with ▁his ▁assistant ▁Av sh alom ▁Fe in berg , ▁his ▁sister ▁Sarah ▁A aron so hn ▁and ▁a ▁few ▁others , ▁A aron so hn ▁organized ▁N ili , ▁a ▁ring ▁of ▁Jewish ▁residents ▁of ▁Palest ine ▁who ▁sp ied ▁for ▁Britain ▁during ▁World ▁War ▁I . ▁He ▁recommended ▁the ▁plan ▁of ▁attack ▁through ▁Be ers he va ▁that ▁General ▁Edmund ▁Allen by ▁ultimately ▁used ▁to ▁take ▁Jerusalem ▁in ▁December ▁ 1 9 1 7 ▁as ▁part ▁of ▁the ▁S ina i ▁and ▁Palest ine ▁Camp aign . ▁O wing ▁to ▁information ▁supplied ▁by ▁N ili ▁to ▁the ▁British ▁Army ▁concerning ▁the ▁locations ▁of ▁o ases ▁in ▁the ▁desert , ▁General ▁Allen by ▁was ▁able ▁to ▁mount ▁a ▁surprise ▁attack ▁on ▁Be ers he ba , ▁by pass ing ▁strong ▁Ott oman ▁def enses ▁in ▁Gaz a . ▁ ▁In ▁ 1 9 1 7 , ▁Cha im ▁We iz man ▁sent ▁A aron so hn ▁on ▁a ▁political ▁campaign ▁to ▁the ▁USA . ▁While ▁there , ▁A aron so hn ▁learned ▁that ▁the ▁Ott oman ▁authorities ▁had ▁intercept ed ▁a ▁N ili ▁car rier ▁p ige on , ▁which ▁led ▁to ▁the ▁arrest ▁and ▁tort ure ▁of ▁his ▁sister ▁Sarah ▁and ▁other ▁members ▁of ▁the ▁under ground . ▁ ▁Death ▁and ▁legacy ▁After ▁the ▁war