A standard call & response we hear in America is "I was just following orders" - "So were the Nazis".
Let's say you're a blonde haired, blue eyed specimen of Aryan perfection, and you actually GET some orders. You're not so thrilled with said orders. Was there any kind of process for soft-hearted yet still very much Aryan folks?
(minor edit: typo / clarity)
There was not a recognized Conscientious Objector status for citizens in Nazi Germany, and failure to serve was treated as desertion or sabotage.
For example, Franz Jägerstätter was a Catholic conscientious objector who was beheaded for refusing to serve in the Wehrmacht. He was charged with "Wehrkraftzersetzung" or undermining military readiness.
He was offered to be a paramedic, but refused. His priest and Bishop came to visit him in prison and told him he could serve. He refused. Eventually, the Nazis executed him.
He was beatified by Pope Benedict XVI in 2008. Beatification is one of the steps to Sainthood.
Source: http://www.vatican.va/news_services/liturgy/saints/ns_lit_doc_20071026_jagerstatter_en.html
PS: He was the ONLY person in his local district to vote "no" on the Anschluss.