For 1v1 the only 2 things that this doctrine that is readily available being Sprint and Stormtroopers. The other abilities being Blitzkrieg, Stuka bomb and Close the pocket are more tended to team games. For 1v1 you can only use Blitzkrieg if you vechile preservation is very good, since you're alreaday behind in fuel contention against meta-game USF/SOV. Don't even bother saving munitions for the Stukabomb + Close Pocket rape combo. Munitions is better spent earlier on infantry upgrades, abilities, mines and sprint to keep you in the game.
Sprint is a great ability that you can use defensively and offensively.
- Defensively, if you're caught in a bad position with your infantry just sprint out rather than wasting time on retreating, healing, map control and unecessary MP drain.
- Offensively, though this ability can let you kill support weapons and retreating squads easier. Snipers and/or stormtroopers sprinting forward to finish off a retreating squad is something opponents typically don't account for and you can punish them for a late retreat.
Stormtroopers are the bread and butter of this doctrine in 1v1. Don't bother with the panzershreck upgrade though, these guys should be used primarily for their STG44 upgrade. I typically do not purchase a stormtrooper squad til I have the munitions readily available for the STG44 immediately. Stormtroopers without this upgrade are just grossly overpriced grens, you must always have it!
The stormtroopers play 3 roles for me after this including:
- Defending isolated territories - On the sides of the map which are typically not constantly in engagements you can get some easy squad kills, esepcially when your opponent orders shift-cap commanders to cap the map. Just wait til your opponent is capping, engage the STG44 ability, take off hold fire to cut them all down. Try do this when you know they are distracted elsewhere!
If the capping squad is Shocks or Paratroopers (tommie upgrade) it is best to throw a a grenade on the biggest cluster. You can engage the STG44 ability after that to get the squad kill if required.
- Defending support weapons - When your opponent is going for a flank on your MG42 or pak40 you can quickly cut them down with the STG44 ability. If they try to throw a grenade at the support weapon they will probably lose their squad. Obviously suprise them with cloak/hold-fre here as well.
- Killing retreating units - This takes patience and self control. Wait for your opponent to overcommit squads in an engagement against your main line (gren, HMG and/or armour) and as they retreat with low health kill them all with the STG44 ability. Alternatively if you can't sneak behind their lines or predict their next offensive push position, a quick sprint into position can have a similar effect. Especially in areas where fencing/walls will force them to have a longer retreat path and you've got time to move up.
Additionally avoid using Stormtroopers as main-line infantry as tank/infantry at long ranges will cost effectively destory you. I typcially just make 1 Stormtrooper squad for the whole game to avoid huge MP drain.
Hope this helps!