Teribums, when you finally untangle your knickers allow me to enlighten you on some very basic English.

Irreparable: (Of an injury or loss) impossible to rectify or repair:

This is from the Oxford Dictionary.

If the German army was IRREPARABLY damaged it could not, a little more than two decades later, have caused havoc across Europe.

As for Modette's qualifications I have no reason to doubt her claim, noting from her previous posts a well regulated and reasoned response, I have read nothing that would lead me to doubt her.

By the way which University did you attend?