sentence: operators ; royal australian air force 69 aircraft , 22 db-7b a28-1 to a28-22 , 9 a-20c a28-23 to a28-31 , 9 a-20a a28-32 to a28-40 and 29 a-20g a28-50 to a28-78 ( a28-41 to a28-49 not used ) no . 22 squadron raaf ; brazilian air force 31 aircraft , 30 a-20k and 1 a-20c 1st bomb group light 2nd bomb group light ; royal canadian air force no . 418 squadron rcaf ; french air force no. 342 sqn raf ( free french ) boston iii/iv japanese forces captured a few dutch aircraft ( db-7b 's ) in java .