Is it British or enemy? Down she goes; a steep volplane turning into a spiral, and finally into a murderous-looking nose-dive. Thank Heaven, it is the enemy machine. I have seen the black cross on the tail. Back comes our machine triumphant, and we continue on our way to Ostend.

There are various objectives of an offensive through the air. There is the attack on enemy aircraft. This is hardly a matter for an organized raid; it is rather the errand of a cruising battle-plane. Next there comes the destruction of material; ammunition columns (usually situated in woods), parks of transport, railways, and all appertaining to them, and especially bridges and trains, stations and sidings, enemy headquarters, aeroplane and airship sheds, petrol depots, and gas-works.

Lastly, there is the bombing of troops. This is a comparatively simple matter, the best occasion on which to attack them being when they are crowded in roadways and similar areas.

Zeebrugge was at last almost within reach. The place is recognizable from the long jetty running in a large curve far out into the sea. Proceeding in a westerly direction are numerous heavy troop-trains, and standing in the sidings several locomotives with steam up, all of which incidents point to the movement of a large number of troops. In the harbor are four destroyers and three submarines. The more the merrier!

Gradually we draw nearer. It is now possible to see something of the panic in the streets and roadways. Motor-cars are darting out of the city in all directions; the destroyers are hurriedly trying to make for the open sea. The anti-aircraft guns begin to open fire from every quarter. And then we commence to drop our bombs. Down they go, those ministers of death and destruction, to their targets. Huge columns of living flame leap up skywards hundreds of feet into the air. The din of the engine resounds upon the ear-drums until we begin to wonder if we shall ever be able to hear distinctly again. But down below, where the guns still pound away unceasingly, the crash of the bursting shells, the violent explosions of the dropping bombs; all are strangely noiseless. It is a veritable inferno of death and destruction.

The roof-tops of the city are covered with great rolling clouds of thick black smoke. It is now almost impossible to distinguish any landmark on the ground below.

Two of our machines have already gone crashing down. The sight of them falling is the greatest shock to the nerves imaginable; it is the true test of bravery, for one always feels tempted to give up and follow them, but only for the passing second. The lust of battle grows strong again; more bombs and yet more are dropped onto the stricken city. The flying of the machines is marvelous to behold.

Another of our craft is hit, making number three; she, too, disappears into the mist beneath. Our bombs are now all exhausted and we turn thankfully homewards. Another machine drops out, to land safely on the foreshore, and, as we afterwards learn, the pilot is made a prisoner. Then we reach our own lines once more and are safe.