 Complete the following phrase:  Operation Menace was an Allied plan to either persuade Dakar to join the Allied cause, or capture it by force. De Gaulle believed this was possible. Among the units taking part was the newly formed FAFL Groupe de Combat Mixte GMC 1, code-named Jam, consisting of four squadrons composed of Bristol Blenheim bombers and Westland Lysander liaisonobservation aircraft. The 