 In the wake of the fall of Rabaul , the Catalinas of Nos. 11 and 20 Squadrons became the RAAF 's only offensive weapon against the Japanese . Their raids on Rabaul did little to stem the Japanese advance , and in the following months Port Moresby itself was subjected to increasingly frequent attacks , which destroyed aircraft , facilities , and squadron records . In February 1942 , the Short Empires operated by Nos. 11 and 20 Squadrons were transferred to the newly formed No. 33 ( Transport ) Squadron . No. 20 Squadron lost two Catalinas during patrols on 4 and 6 May ; the nine crewmen of the first were later found to have been captured and beheaded ; the crew of the second were also captured and subsequently disappeared without trace . 
 In the wake of the fall of Rabaul , the Catalinas of Nos. 11 and 20 Squadrons became the RAAF <a href='null_genetive' title='1'><mark>'s</mark></a>only offensive weapon against the Japanese . Their raids on Rabaul did little to stem the Japanese advance , and in the following months Port Moresby itself was subjected to increasingly frequent attacks , which destroyed aircraft , facilities , and squadron records . In February 1942 , the Short Empires operated by Nos. 11 and 20 Squadrons <a href='uninflect' title='2'><mark>were</mark></a> transferred to the newly formed No. 33 ( Transport ) Squadron . <a href='None' title='3'><mark>No</mark></a>. 20 Squadron lost two Catalinas during patrols on 4 and 6 May ; the nine crewmen of the first <a href='uninflect' title='4'><mark>were</mark></a> later found to <a href='been_done' title='5'><mark>have</mark></a> been captured and beheaded ; the crew of the second <a href='uninflect' title='6'><mark>were</mark></a> also captured and subsequently disappeared without trace . 
In da wake of the fall of Rabaul , tdaCatalinas of Nos. 11 and 20 Squadrons became thdaAAF  only offensive weapon against the Japanese . Their raids on Rabaul did little to stem thedapanese advance , and in the following months Port Moresby itself was subjected to increasingly frequent attacks , which destroyed aircraft , facilities , and squadron records . In February 1942 , the dart Empires operated by Nos. 11 and 20 Squadrons was transferred to the newly formed No. 33 ( Transport ) Squadron . Don't no. 20 Squadron lost two Catalinas durin patrols on 4 and 6 May ; the nda crewmen of the first was later found to done been captured and beheaded ; the crew of the sedad was also captured and subsequently disappeared w/o trace .