"When did Wilhelm or his ancestors face a foreign religion/ideology like this? We are not dealing with a competing nation-state. We are dealing with an ideological religious construct whihc wishes to conquer us."
Might be a good time to study the assassination of Archduke Ferdinand by a Muslim radical (amongst other Serbian nationalists.)
This is your fundamental problem. Nationalism is a very different idea than Islamism. The Serbs wanted to free all of Serbia and control part of Croatia and Bosnia-Herzegovina. They did not wish to conquer all of Europe and forceable make everyone Serbian Orthodox.
"I am not a neo-con. I am a nationalist standing up for Western Civ."
Well, your brand of nationalism is closer to Kipling's Imperialist Conservatism or modern Torism then it is too any nationalism of the American tradition.
When was the Golden age of American pacifism and Isolation? From our birth in war, we have expanded by force, conquering 1/2 of a continent. We started claiming colonies in the early 19th century and we were practicing gunboat diplomacy from the 1790's.
Paleo-con isolationists are defending a history that exists only in their mind.