Wow, what is this post about? Penal battalions are awesome. My main use for them is to counter panzer grenadier spam. They do it quite well with the flamethrower. Other uses include general anti-infantry and as a side capping unit that can 1v1 any squad.
Going penal battalion spam is a mistake. They are too expensive and too role specific for that. They are a combined arms unit that should be used with conscripts, snipers, weapon teams etc. They don't take damage well and are better used cleaning up in large fights.
Penal battalions don't replace conscripts, rather they do what conscripts suck at... killing infantry in straight fights.
