Egypt retained their title after upsetting favourites England 2-1 in a thrilling final played on the new blue all-glass showcourt at the Ahorn-Sportpark.
Eighth seeds USA beat India, the sixth seeds, in the play-off for seventh place to record their best finish since 1983.
National champion Sourav Ghosal lost the first singles 9-11 11-2 11-13 7-11 to Julian Illingworth in 50 minutes while Mahesh Mangaonkar waged a grim battle before losing 11-6 5-11 11-7 2-11 5-11 to Todd Harrity in 51 minutes.
The third singles between Christopher Gordon and Harinder Pal Sandhu became redundant.
"With Gilly (Lane) still recovering from his back injury, we essentially played the whole tournament a man down," said USA coach Paul Assaiante.
"We'd love to have had the luxury of being able to rest our players. But to beat India today was very special and Julian's win was especially impressive," he added.
Fourth seeds Australia defeated third seeds France 2-1 to clinch the bronze medal while Malaysia beat Italy 2-1 to finish fifth in the tournament.
The 23rd staging of the World Squash Federation event, hosted by Germany for the first time, featured a record 32 nations and more than 120 athletes.