The line of battle was marked by tactical rigidity and often resulted in indecisive engagements. Fleet commanders sometimes met with greater success by altering or abandoning the line of battle outright by breaking the enemy line and moving through it (e.g. Four Days Battle, Battle of Schooneveld, Battle of Trafalgar), by trying to cut off and isolate part of the enemy's line while concentrating a stronger force on it (e.g. Battle of Texel, Battle of the Saintes), or by trying to "double up" the enemy's ships (e.g. Battle of Beachy Head, Battle of the Nile).