BAGHDAD — The olfactory capabilities of man’s best friend, canis familiaris — dogs, that is — are well-known and have been used by law enforcement to detect illicit drugs for decades. Soldiers with the 2nd “Dagger” Advise and Assist Brigade, 1st Infantry Division, United States Division – Center, are hoping to impress upon Iraqi Security Forces the utility of working dogs to fulfill that function, but more importantly to become the first line in the detection of explosive materials.