"It is very like," said the bearded poilu, smiling at the comparison of military strategy with a baseball game; "perhaps I can explain it to you in that way. In this strategic lozenge, the whole army is divided in four parts. The rear, or the reserve army, is where you call 'home base.' The fighting or operative corner is at 'second base,' and the other two armies are at 'first base' and 'third base' respectively. You understand the positions?" [Illustration: _Courtesy of "Panorama de la Guerre."_ "OUR ENEMIES SHOWED GREAT GALLANTRY." German gunners saving their 77-mm. piece in the teeth of a French infantry attack in the Argonne.] "Of course," said the boy, "that's quite easy. But it doesn't look particularly strong. I should think a long line, like the German one you were telling me about, could come on both sides of that point, or 'second base' army and gobble it up." "So it could," said the veteran, nodding appreciation of the lad's perception, "if the 'second base' army stayed there to be gobbled up. That, my boy, is exactly what it doesn't do. When the enemy line advances, it is halted by this sharp point. The flanking movement is impossible, because if the long line bends round the corner, it would take several days for the ends to close in, and, when they did close in, they would only be confronted by a new army, let us say at 'third base.' Long before they could reach there, the fourth army, at 'home base,' could have marched up to reënforce the operative corner and smashed the weakened middle of the opposing line, which, with its wings gone, would have no reserves on which to fall back." "Great!" cried the boy. "Then the German army would be cut in half!" "Precisely! It would! And, my boy, if the line be cut, then our armies, which had broken through, could fall on the line of communications and cut off the enemy's provisions and supplies. "If, on the other hand, the German commanders saw this danger, which, of course, they would, they could halt all along the extended line, reënforcing from either side the masses thrown against the operative corner." "Ow!" said Horace, "that would be awkward." "Yes," the veteran responded, "if there were no strategical reply. But when the line halts, the three armies in reserve in the diamond can be swung either to right or left. So, since they have only a short distance to go, they can force the battle on their own chosen ground much more quickly than the opposing troops--which are stretched out in a long line--can come up to defend it." "I don't see that," said Horace. The veteran smiled.