Was attrition ever a rational strategy — or a euphemism for having none?

THE SHORT ANSWER

• Attrition chosen, not stumbled into. Verdun is the war’s clearest case of attrition as designed strategy rather than accepted byproduct. Its logic required the exchange rate to favor the attacker — but attacking a fortress zone under its guns produced no such rate, and prestige soon reversed the roles: by summer Germany was defending its gains at Verdun for the same face-saving reasons France had defended the city. A strategy premised on the enemy’s irrationality had made its author irrational first.
• Coalition warfare sets the calendar. The 1916 offensives were synchronized at Chantilly in December 1915: simultaneous pressure east, west and south so Germany could reinforce nowhere. Verdun preempted the plan and turned the Somme from a joint French-British offensive into a mostly British one launched early, on ground chosen only because the armies met there. Half of understanding 1916 is seeing each battle as a payment to an ally.
• Brusilov’s method: why it worked once. Brusilov attacked wide instead of narrow — no telltale massing, dugouts sapped to within 75 meters of Austrian lines, reserves distributed, artillery registered by air photo. It traded the doctrine of overwhelming one point for surprise at many. It broke an army whose Slavic regiments increasingly surrendered — and then outran its railways, met German stiffening, and bled out attacking Kovel the old way. The method was right; the Russian state behind it could only afford it once.
• Romania reads the map wrong. Bucharest joined for Transylvania — its blue arrow on the map — after Brusilov made the Habsburgs look finished, extracting Entente promises much like Italy’s. But it bordered three enemies, its army was short of everything, and Russia’s help came late and grudging. Its collapse handed Germany a million tons of grain and a vital oilfield: the entry designed to shorten the war lengthened it. Small-power timing is a discipline of its own; compare Bulgaria’s (Ch. 4) — and its eventual bill (Ch. 10).

WHAT IT CHANGED

The arithmetic, honestly. 1916’s ledger: ~300,000 dead at Verdun, ~300,000 more on the Somme, perhaps a million Austro-Hungarian and Russian casualties in the east, Romania overrun — and the front lines moved kilometers. But arithmetic is exactly how the general staffs now think: Germany finishes 1916 outnumbered, blockaded (the “turnip winter” begins), and with a weaker ally to prop; the Entente can replace losses and Germany increasingly cannot. Attrition is monstrous — and it is working, one-sidedly.

Austria-Hungary becomes a protectorate. After Brusilov, Habsburg armies fight under German command, propped by German divisions. The old emperor Franz Joseph dies in November 1916; his successor Karl secretly sounds out the French about peace within months. The empire that started the war can no longer fight it alone — remember this when it dissolves in weeks in 1918.

The men of 1916 remember. Verdun’s survivors — half the French army rotated through — will refuse Nivelle’s next “decisive” offensive within six months. The Somme’s survivors become the hard, method-fighting BEF of 1918. And a German soldier gassed and wounded that year, and the French sergeant at Verdun named de Gaulle, and captain Pétain’s whole generation carry 1916 into the century: the next war’s leaders were all shaped in these two furnaces.