Benjamin Tallmadge made significant contributions to the American Revolution, particularly through his work as a spy and intelligence officer. Notably, he:
- Collected information from the British in New York City.
- Created a code of numbers that hid people's identities.
Tallmadge was instrumental in organizing and leading the Culper Spy Ring, which provided critical intelligence to the Continental Army. His use of codes and deceptive tactics was essential for the success of their operations and for protecting the identities of the spies involved. The other options you provided, regarding burying information and using handkerchiefs to signal, are not well-documented aspects of his contributions.