8th Army Shermans can be a bit contentious but are really not to bad to fathom. They used only two sherman types: M4A1 and M4A2. The original "swallows" were M4A1 DV with M3 bogies and a couple of really early ones with rotor gunsight and M2 barrell with counterweight (I stress figures in the ones & two's. The M4A1 seems to have stayed pretty constant throughout bein DV with M3 suspension. The M4A2 evolved from the original 3 piece nose, M3 supension and DV
hull to a DV hull with early M4 suspension with symetrical skids and one piece nose. These seem to be the major Sherman type by Tunisia serving alongside the M4A1's.
The 1st Army arrived in theatre (Tunisia) with a mix of late model Crusaders III's in 26 Armd Bde. These were quickly replaced or supplemented by M4A2 with one & three piece nose, M4 Suspension and Cast hoods with persicopes (not DV). These are easy to tell apart from the 8th Army vehicles as the base colour is OD as opposed to Desert Pink, Pale Stone etc on the 8th Army vehicles. The other recognition point is that unlike the 8th Army vehicles they did not have sunshield rails along the side. One of these vehicles of 16/5 lancers is ID'd as an M4 in the Osprey book which unfortunately has a lot of M4 ID attributed to M4A2 and M4A4. 26 Armd brigade
used Mud to tone down their Dark Shermans as they got closer to the coast.
Recommended refrences are:
"Codename Swallow" by Dennis Oliver from Mushroom Publications
http://www.missing-lynx.com/reviews/britain/codenameswallowbookreviewgp_1.htmlhttp://www.ipmsusa2.org/Reviews/Books/Historical-Bio/mushroom_codename_swallow/mushroom_codename_swallow.htm"British Sherman tanks " by Dennis Oliver from Concord Publications - Armour at war 7062
https://armorama.kitmaker.net/review/2374Dennis has teamed up with Mike Starmer and their first book, "The New Breed" from Factory Publishing due any day now (literally)
http://thefactorypublishing.com/live/I must confess I have an association with Dennis so may be a little biased. I hope to have a review of this book up by weeks end.
Al