First of all you must study the map. Try to locate convenient points for weapon emplacement, pillboxes, artillery positions and trenches. Try to trace the defense line, zones of fire, tanks danger directions.
After that you can depart to explored district.
If you find some defense installations with your plans, you can shout HURRAH! and submit your documents for joining to the High Command Military Academy named after Frunze in Moscow.
If not, hell with them!