Royal Engineers:
- Start off as durable as Panzergrenadiers (and IS)
- Vet 3 Panzergrenadiers are less durable than vet 3 REs (PGs 0.71 v. IS 0.76 v. REs 0.66 vet received accuracy multiplier)
- Reinforce for less (26 v. 28 manpower) than IS
- Reinforce for 13 manpower at vet 3 (Soviet weapon teams reinforce for 15)
- Benefit from Bolster Squads (which makes them more durable)
- Can equip Brens and PIATs for the same cost-to-equip of IS (An RE Bren has the far DPS of ~2.7 IS rifles)
- Receive a better Bren than IS (5%/11% more N/F DPS)
- Don't receive the out-of-cover penalty IS have (i.e., the PIAT is always better on REs and the RE Bren is better than the IS Bren's in-cover performance)
- Can receive the Heavy Engineer upgrade which effectively halves the damage REs take from small arms while increasing repair speed and equipping an (extra) IS Bren
- Can equip up to four slot items at once (Heavy Engineer Vickers K, Minesweeper/Flamethrower, and two Brens/PIATs so long as you build both upgrades before picking up Brens)
- Have all the benefits of an engineer squad (repairing, building, mine-laying, etc.)
- Cost less than IS (210 manpower v. 280 manpower)
What do IS have over REs?
Infantry Sections:
- Can receive healing/artillery upgrades
- Receive a 20% accuracy bonus and slot weapons (which can make it easier to drop Brens) at vet 3
- Do not require upgrades for effective DPS
- Benefit from certain doctrinal abilities (Commando Regiment's Assault, for example)
Obviously, a Heavy Engineer/Flamethrower/dual-Bren/5-man RE squad is too expensive (210 manpower/250 munitions without teching costs) to field in your average game but Royal Engineers with Brens or PIATs can substitute for Infantry Sections quite successfully late-game. They're definitely a unit you should take advantage of.
Hope this helps.
