Are your three magazines part of the Far East special monthly edition of the prisoner of war, if they are and they were produced by the Red Cross and St John PoW Department.
The far east editions started with Vol 1 No1 in February 1944, and covered 12 editions until the last one which would be number 12 published in December 1945.
However these were only part of the PoW magazine which started in May 1942, and finished with the July edition 1945, this one mostly covered the Italian and German POWs, with bits of the magazine covering the Japanese POWs every now and again.
All of the magazines are very informative, cover a multitude of issues affecting the lives of the POWs, I was very fortunate a couple of years ago to be giving all of the copies of this magazine.