On 9 Apr 1879, South Africa, Lower Tugela. From 9 April - 18 June1879 Regiment engaged in line of communications duties. Duties including escort for ten convoys between Lower Tugela and Amitikulu River
On 28 Apr 1879, South Africa, Lower Tugela. Two companies ('C' and 'F') relieved two companies of The Buffs on the right bank of the Tugela, remaining till 28 May 1879
On 18 June 1879, South Africa, Lower Tugela. Advance of 1st Division from Lower Tugela. 99th Regiment formed line of communications garrisons at Fort Pearson, Tenedos, Crealock and Chelmsford
On 3 Aug 1879, South Africa, Zululand. 99th Regiment left for Natal Garrisons distributed to :
Pietre Maritzberg- Headquarters, 'A', 'C', and 'H' Companies
Rorkes Drift - 'B' Company
Greytown - 'D' Company
Fort Pearson- 'G' Company
Durban - 'F' Company
On 27 Sept 1879, South Africa, Pieter Maritzberg. 'A' and 'H' Companies to Harding to counter possible Pondo uprising. Recalled to Pieter Maritzberg later in month
On 21 Oct 1879, South Africa, Pieter Maritzberg. 'A', 'B', 'C', 'D' and 'H' Companies concentrated then ordered to Pinetown
'E' Company to Pinetown from St Johns River
'F' Company to Pinetown from Durban
'G' Company to Pinetown from Lower Tugela
On 30 Dec 1879, South Africa, Pine Town. Regiment proceeded by rail to Durban and embarked on H M Troopship 'Himalaya' for Bermuda
On 3 January arrived at Simons Town en-route
On 6 January joined by detachment of nine Officers and Men, one woman and two children sailed for Bermuda
13 January arrived at St Helena and embarked detachment from garrison - Two Officers, five Corporals, 68 Men, three women and five children - departed same day en-route Bermuda
On 16 January arrived at Ascension Island and coaled ship, sailing again on 19 January
On 19 January sailed for Bermuda
During 1880, Afghanistan, Maiwand. The 66th was noted for its gallant stand during the battle of Maiwand, but lost a total of 285 killed and 33 wounded
On 4 Feb 1880, Bermuda. Regiment disembarked at Hamilton Town. Headquarters (18 Officers, 37 Corporals, 540 Men, 33 women and 59 children). Marched to Prospect Camp