If that is how the date is written on the photo, it may be 4 Dec 1942 rather than Apr 12, 1942. The 37th was still in the USA in April 1942. By December 1942, they were in the Fiji Islands. There was an advanced detachment that was sent to New Zealand (the original PTO destination of the 37th), but they didn't arrive in Melbourne, Australia until 14 May 1942. The spent about a week in Australia before heading to Wellington, New Zealand. The Division history only states there were 20 officers and 60 EMs in the advanced detachment. There is no more detail than that. If the date was written on the photo later on, it's possible it is off by a month, which might suggest he was part of the advanced detachment.