Super entry and solid progress so far, my friend @bpfish36! Looking forward to your next steps!

I added some detail to the model this past week. First I had to add the fire extinguisher. I painted this with a combination of using paper and liquid masking. The body of the extinguisher itself is red, the nozzle black, straps olive drab and the handle gunmetal. I painted and weathered the canteens as well. I used US khaki for the covers and black for the caps. These were all glued in place along with the rear bulkhead. Next step is to add ammunition storage.

15 attached images. Click to enlarge.

Really nice job there, my friend @bpfish36!

Its summer so progress is slow, but moving. The interior of the hull is just about done now with the addition of storage tubes and and construction of the rear section. Two things; first, I ran into an issue after painting the tubes in that I realized the lines from the model's press were still more prominent than I cared for. I sanded them off but before repainting them I thought rather than completely airbrush them again, I would apply highly diluted OD paint with a brush to see if it gave them a unique weathered effect. I liked it, let me know what you think. Second, I didn't realize until this stage this model has no engine. My plan is to eventually create a diorama for this, so not sure anyone would ever actually see the engine, but I kind of feel it belongs there. Would you add it? I'd have to buy it 3rd party, most likely resin, if I can find it...

2 attached images. Click to enlarge.

Very nice progress, Bian @bpfish36
The result of the diluted OD is beautiful.
If nothing would be visible from the engine I would leave it out like mentioned by Spiros @fiveten, but I do understand your thoughts about adding it.

Very nice, thank you. I'm leaning towards using this as the centerpiece for a diorama (as I've never done one and long wanted to) however I'm having questions on what the typical TD crewmember wore. Without a doubt some, if not most, M36 crew wore standard GI issue gear, but I have seen pics of crewmembers tanker-type coveralls and helmets. My guess is the driver and assistant-driver wore the tanker gear and the rest of the crew wore GI issue. Since you've done some TDs, do you have any input? Thank you.

Since the M-36 utilizes the hull of the M-10, it makes good sense for Airfix using the common sprues, my friend @bpfish36.