What happens
Somerset refuses to send reinforcements to Talbot at Bordeaux, claiming the expedition was rashly planned by York and that their full army might be trapped by a sortie from the town. Sir William Lucy arrives to urge him to act, warning that Talbot is surrounded by French forces and dying. Somerset blames York for the delay, but Lucy counters that York accuses Somerset of withholding the promised horsemen. Somerset finally agrees to send aid within six hours, but Lucy declares it is already too late—Talbot is captured or slain.
Why it matters
This scene crystallizes the play's central tragedy: internal division destroying English strength. Somerset's refusal to reinforce Talbot is presented as calculated negligence masquerading as strategic caution. His argument that the expedition was 'too rashly plotted' and that committing forces risks the entire army carries superficial logic, but his real motive emerges in his aside—he suspects York deliberately sent Talbot to die so York could claim the glory. Somerset's paralysis, rooted in factional suspicion, becomes the instrument of Talbot's doom. The mutual blame between Somerset and York, relayed through Lucy, shows how the Wars of the Roses have already begun to poison English command before the play's end.
Lucy's arrival and his mounting desperation form the emotional core. His repeated pleas for 'succor' go unanswered until Somerset's grudging promise of horsemen 'within six hours'—a timeframe Lucy immediately recognizes as worthless. The scene's final exchange, where Lucy declares 'His fame lives in the world, his shame in you,' transforms Somerset's delay from military miscalculation into moral failure. The audience knows Talbot is already lost; Somerset's too-late commitment to send aid only confirms that English nobility's internal strife has defeated them more thoroughly than any French army could. Somerset exits without witnessing Talbot's actual death, but the scene ensures we understand who bears responsibility.
