German Veterans were held with the up most respect by Hitler and Nazi-Germany. They were under the belief that the Germans had not failed during the First World War but instead the problem was the home front: specifically the Jews.

By this, it was believed that the Jews did not 'provide' for the WW1. They were the cause of failure by the German Army. Hitler also spewed lies that WW1 had indeed never ended. He stated that the Entente never entered Berlin, the capital of Germany, and thus World War 1 was simply on 'hiatus'. This is, of course, not true. Believe me, WW1 did indeed come to an end.

However, based on this belief - the German people felt they were treated quite unfairly, especially under the Treaty of Versailles. Nazi Germany had set up a system of propaganda that only believed in the true German warrior but also that those on the home front had failed their task. Hitler himself served in WW1, however became unconscious during so and only woke up after Germany's defeat.

Here are some WW2 examples of a 'the true German warrior' propaganda: http://imperialsoldier.deviantart.com/art/German-WWII-Propaganda-160061897

However, I do not know how the individual German soldier would have been treated and has definitely interested me in further study.

EDIT: Look at how Nazi-Germany treated 'disabled' persons (referred to as the Burden on Society) and a greater picture of Nazi-Germany may take place.

EDIT 2: There were thousands of injured war veterans left out to starve after the return to WW1. Hitler did not believe in a social system to take care of the 'disabled'; however I am unsure if this included veterans.