Wealth is built in the long term buy and hold. 

Generally, your idea is a good idea since you’re really leveraging your housing allowance to build equity and wealth. I

It seems to me that in Germany, being wealthy is a disgrace (seeing that from a tax and legal perspective).Now I don‘t want to post here about how „difficult“ it is living in Germany, but instead I am looking for people that think the same way. 

A very nice way to grow wealth is to buy amidst a mid-gentrifying neighborhood and "riding the wave" as things appreciate dramatically.

Quote from @Michael Dallas: Real wealth is built by holding onto property.

Im currently in the car sales industry and doing okay but I know (or heard👨🏽) real wealth is made in real estate, i been intrested in real estate for a while now but always get held back by the time it takes to see nice profits.

Do what wealthy people do.

In the long term real estate will make you wealthy, but it won't do it quickly, and the cashflow won't be nice and uniform where you can quickly start living off of it in the first few years to upgrade your lifestyle.Cash flow can be tricky until you scale to a large enough portfolio where your expenses tend to balance themselves out each month.  

I am currently active duty military and looking for investment options for the property to create a passive income and build wealth. I

This was due to desirability, affordability, limited supply due to geography and laws protecting open space coupled with very high demand due to net in-migration of high-earners/wealthy people, and perhaps most importantly a diverse job market in recession-proof sectors like education, government, defense, healthcare, etc. not just tech, energy or manufacturing that can be boom/bust.