They may take either one of two forms: either they may be dated, headed “Report on so-and-so” (see example on following), and inclosed with a letter of transmittal; or they may themselves be in the form of letters addressed directly to the person or office for whom they are destined. Reports may consist of expository description on the one hand or of a narration on the other, but they usually consist of a combination of the two. Here is an example of highly expository description. It is the report upon the German raid which was given us under _Operation Orders_. In the field, 12th April, 1916. CAPTAIN WAGENER’S REPORT ON THE RAID ON THE EVENING OF 11TH APRIL, 1916 At 4 p. m. the raiding party marched from Martinpuich through Pozières, then by the Lattorf Graben—Regimentstrichter—Krebs Graben to the Appointed dug-outs on the left of Sap No. 3, where the evening meal was found ready prepared. At 8 p. m. the artillery preparation commenced as prearranged. Shortly after fire was opened, the whole of the enemy’s position from Windmühle to Besenhecke was wrapped in greyish-white smoke, which the wind drove back over Sap No. 3 into our lines. By 8.10 p. m. it was impossible to remain in our trench east of Sap No. 3 without wearing a gas mask. This was still the case at 8.20 p. m., when the patrols moved forward from their dug-outs to the Hohlweg, in the order Stradtmann, Dumas, Böhlefeld, and Freund. Lieutenant Boenig followed close behind Lieutenant Stradtmann. By 8.25 p. m. the party was posted ready in the Hohlweg. The clouds of gas and smoke, however, still hung so thick over the enemy’s trenches that it was impossible to distinguish whether our own shells were still falling on the point of entry or whether our artillery had already lengthened their range. At 8.27 p. m. Lieutenant Stradtmann received the order to advance to the attack with his patrol. Lieutenant Boenig, with the six stretcher bearers, left the Hohlweg simultaneously and in rear of Stradtmann’s patrol, and posted connecting files, whose positions were marked by red signal lamps shaded to the front and to the sides. At 8.28 p. m. Dumas’ and Böhlefeld’s patrols advanced. Following the line of connecting files, they reached the point of entry, to find that Stradtmann’s patrol was already in possession of 16 yards of trench, and had captured three prisoners. The latter had come out of their dug-outs just as Lieutenant Stradtmann appeared in front of the enemy’s trench. They carried hand grenades and rifles with bayonets fixed, but were immediately disarmed by Lieutenants Boenig and Stradtmann.