Shelby, Sessions Split on Iraq
The vote was on a Republican sponsored non binding resolution that called for the White House to provide more information on it's long-term plan for Iraq. This measure was a counter to a more aggressive Democratic measure that called for a timetable for troop withdrawal. The GOP proposal was nearly identical to the Democratic resolution with the exception of the troop withdrawal portion.
Though, Sessions and Shelby both voted against the Democratic resolution (only one GOPer voted for it), the two were split on the Republican backed measure.
Shelby joined the majority of both parties in supporting the less strenuous proposal, while Sessions was one of 13 Republicans to oppose the measure. The opposition to this resolution saw an unlikely pairing of conservative Republican hawks (who saw any resolution as a sign of weakness) and liberal Democrats (who wanted the tougher Democratic measure).
In my mind this is the highest profile split between Alabama's senators since the 1999 impeachment trial vote (Sessions voted to convict on both counts while Shelby only voted to convict on the perjury charge).
You can draw your own conclusion as to which senator cast the correct vote, but it is always interesting when Alabama's Senate delegation decides to cancel each other out.