3. No. 1 Column will assemble on ground N.E. of 9th brigade camp at 3 p.m. on 10th December in following formation:—
- 9th Lancers.
- Mounted Infantry.
- G. Battery R.H.A.
- Brigade Division R.F.A. and Howitzer Battery.
- Highland Brigade (in mass).
- Bearer Company, Highland Brigade.
- 2nd Yorkshire Light Infantry.
- Sec. T.B., R.E.
- Balloon Sec. R.E.
The C.R.A. will arrange for a portion of the ammunition column to accompany this force.
4. The advance will be directed on the southern end of Magersfontein ridge.
5. At 3 p.m. the R.H.A., cavalry and mounted infantry will advance covering the front from railway to Modder river; the mounted infantry forming escort to R.H.A. After the reconnaissance the cavalry will withdraw to the right flank of Highland brigade and protect that flank, leaving a party to watch the left of artillery.
6. At 3.10 p.m. the remainder of the column will advance on the southern end of Magersfontein ridge, keeping well under shelter of Outpost ridge (concealed from view of enemy) in following order:
Advance Guard—half-battalion; followed at 2.30 p.m. by half-battalion, R.F.A., remainder of force (except 2nd Yorkshire L.I.) in the order of parade.
7. The R.F.A. will, when within range, open fire on the ridge, applying to G.O.C. Highland brigade for an escort.
8. The remainder of column will form up concealed to right rear of artillery in action.
9. The 2nd Yorkshire L.I. will proceed from place of assembly along the northern bank of Modder river (under guidance of Rimington's Guides) to Bridle Drift[199] four miles up river, where they will entrench themselves against attack from all sides—especially from north-east to south.—Entrenching tools to be carried. Signal communication to be established (if possible) with Highland brigade, and with Modder River camp.