What are you looking for specifically? Probably the biggest item is not is that they saw themselves as members of the Royal Welch Fusiliers owing to the somewhat convoluted way they were created. Hence officers retained the Flash etc. In action they were happy to take heavier casualties to offer the best possible infantry support, as they saw that as being their key role, protecting their other Regimental mates.
well I'm researching my grandfathers war service. 73rd anti tank Normandy to Germany, but I found out he learned his trade as it were with 71st RWF. So trying to find out where they trained, photos, 1941, 44 strangely it seems harder to find anything out then it does for the 73rd. I know they were the 70th, who turned into the 71st. I went to the museum in Wales, but they not got anyone there to help with research
Do you have his service record at all? 71 ATR is quite thin on the ground, and I've dug up most material there is - training photos are fairly few for the Div in the early years sadly. Best to get a copy of the WD for the period and research each bit in conjunction with his service record to 'place' him so to speak.
Shoot me an email through my website and I can send you some other pointers which may be useful (not all 71 ATR but should lend you a hand how to do the above). jonathanhware.com