Before the outbreak of WWII, Wehrmacht regulations stipulated that each soldier’s uniform and equipment items were to be marked with a tag with his name, and a stamp for his unit. Here is a scan from a Wehrmacht manual that showed where these stamps and labels were to be placed in the various items a soldier was issued.
Here are some original examples of the name labels. These existed in countless variants with and without rank or unit designations. Millions of these were made, with slight variations in sizes, proportions, formats, typefaces, and fabric.Paper name labels were also produced.
In March of 1940 issue of these name tags ceased. Existing tags were allowed to be used by regulation. Production of the tags did not cease, and in fact tags like this continued to be made and used after the war. Probably in wartime they could have been obtained by soldiers as an optional, private purchase way to mark their gear.
I sell rubber stamps that you can use to make an infinite number of name tags. I copied the size and border exactly from a real name tag. I can put whatever you want on the stamp. I use tags like these on my own kit.
The price for this stamp with a wood handle as shown is $23 plus $5 for tracked shipping in the USA. I can also sell just the rubber part of the stamp for $18 shipped in the USA or $19 shipped worldwide, shipped as a regular letter with a stamp (no tracking).