I'll just add one thing to what my friends here have already told you. If you do decide to add shadowing onto your equipment, namely by using washes and drybrushing, use different strenghts of washes on similar type of equipment, so that the end products looks just that different from the ones nearby. For instance those two jerrycans at the back just look very similar, so it's a bit boring to the eye. Use a dirty dark brown wash on one and a black on the other, then drybrush lightly over them with lighter shades of the brownish colour you used to paint them with. After that, they will look significantly different, making the whole thing more interesting to look at. Do the same with the various green bags you have there, and the crates (using different washes and colours to do the drybrushing).
Other than that, it's a lovely model you have there Ctrill. Keep up the good work!