Excerpts from Books and Wikipedia
"The Battle of Cynoscephalae was an encounter battle fought in Thessaly in 197 BC between the Roman army, led by Titus Quinctius Flamininus, and the Antigonid dynasty of Macedon, led by Philip V.. . . It is generally perceived that with the later Battle of Pydna, this defeat demonstrated the superiority of the Roman legion over the Macedonian phalanx. The phalanx, though very powerful head on, was not as flexible as the Roman manipular formation and thus unable to adapt to changing conditions on the battlefield or break away from an engagement if necessary. . . . Macedonia would never again be in a position to challenge Rome's geopolitical expansion. Although the peace that followed allowed Philip to keep his kingdom intact, Flamininus proclaimed that other Greek states previously under Macedonian domination were now free." [Wikipedia]