You mean Deutsche Bank? It definitely was heavily involved. It was a classic imperialist move of lending money to the foreign government for the purpose of that government then spending all of it on imports from the creditor country (and really, more often than not specifically on commodities produced by companies controlled by the bank issuing the loan).

Take this passage from Lenin's Imperialism:

Finance capital has created the epoch of monopolies, and monopolies introduce everywhere monopolist principles: the utilisation of “connections” for profitable transactions takes the place of competition on the open market. The most usual thing is to stipulate that part of the loan granted shall be spent on purchases in the creditor country, particularly on orders for war materials, or for ships, etc.

Greek debt crisis was a modern example of that. Here's a nice summary: https://debtjustice.org.uk/countries-in-crisis/greek-debt-crisis-case-banks-people