flankierendem
Flankierendem is a grammatical form rather than a standalone term with a fixed meaning. It is the dative singular form of the present participle flankierend, derived from the verb flankieren, which means to flank, to place something at the side, or to provide side cover or support. As an attributive adjective, flankierend describes something that acts on or along the flank of a person, object, or operation. Its exact ending changes with the gender, number, and case of the noun it modifies, as is typical for German participial adjectives.
In usage, flankierend describes actions, defenses, or features that occur on the side of a main element.
The form also appears in plural or other cases with corresponding endings, for instance flankierende Kräfte
Etymologically, flankieren combines Flanke with the suffix -ieren, yielding a verb meaning to flank, and flankierend