Expeditionary (adjective)

Relating to or involved in a military expedition sent to a foreign country.

Origin:

Late 16th century (as a noun denoting a person on an expedition): from late latin expeditionarius, from latin expeditio(n-) "a setting out", from the verb expedire (see expedite).

Examples:

1. The U.S. sent an expeditionary force to Iraq to help fight against terrorism.
2. The expeditionary troops were highly trained and equipped for combat.
3. The expeditionary mission was to capture the enemy stronghold and secure the region.
4. The expeditionary army was well-prepared for the harsh desert conditions.
5. The success of the expeditionary forces greatly depended on their cooperation with local forces.