They are not strategic decisions. That's just an organisational approach.
So not strategic that the Treaty of Versailles explicitly banned Germany from having a general staff.
Organization. Is. Strategy.
Take a look at Genghis Khan and his success.
Were his Mongol hordes in the 12th century any more advanced technologically than they had been 100,200, or 500 years before?
Not really.
Was he personally a brilliant general?
Yes.
Did he find other brilliant generals?
Yes.
Did he have a weird string of brilliant generals that lasted consistently for 100 years?
Yes... this suggests something other than luck.
Genghis Khan became an amazing conqueror because he completely reorganized the way Mongol armies fought.
Genghis Khan had observed that inter tribal fights were inconclusive because the victorious side would always stop to loot the camp and let the enemy escape. Genghis Khan fixed this by appointing special officers who's job it was to inventory the goods of a defeated enemy and make sure they were shared out equally, allowing the army to worry about chasing the enemy instead of protecting loot.
Genghis Khan had observed that men were often fearful to fight because they might leave their families behind. So Genghis Khan made it so a warrior's dependents were entitled to his share of the spoils (something only possible because of the previous innovation above.)
Genghis Khan had observed that only princes and nobility were allowed to command troops. He changed it so that soldiers elected their own officers regardless of birth. The commander of the European invasion, Subodei, was not noble, but had gained command on merit.
Genghis Khan knew that his empire was huge and scattered, so he set up a pony express system to keep every part in communication.
Genghis Khan encountered advanced technology like siege weapons and gunpowder in China, and henceforth attached Chinese engineer detachments to all of his armies.
When a merchant entered the Mongol empire, they would be questioned about the roads they travelled, the realms they visited, where the bridges and castles were, who the rulers were and troop strength. This gave the Mongol armies an immense intelligence advantage over their foes. They sent out armies with an actual plan of attack and good intelligence on their enemies.
To see an example, look at this
That's a copy of the extreme west end of a map made in 1402 in Korea. This is before the age of sail and reflects the information that the Mongols had brought back about European geography. (Where they never went further than Poland) They knew about Spain and Africa and Italy.
Anyway, after Genghis Khan died, his heirs were able to use the army that Genghis Khan had organized to go on conquering for decades.
The Mongol empire was successful because Genghis had taken something that already existed for hundreds of years, (fierce steppe horse archers) and organized them into an effective military machine.
That's the point of this digression. Organization is fundamental to being able to have a good strategy. Genghis Khan is just one example. Look at the amazing run of success Rome had after Gaius Marius reorganized the army. Rome's continent spanning empire was built because one guy knew a better way to organize.
Organizational approach is how you win before or without fighting.