The ranks and Insignia are as follows:
NCO's (Non-Commissioned Officers)
Private/Trooper/Gunner/Rifleman- No Insignia
Lance Corporal/Bombardier- 1 Stripe
Corporal/Bombardier- 2 Stripes
Sergeant- 3 Stripes
Staff/Colour Sergeant- 3 Stripes with Small Crown
SNCO's (Senior Non-Commissioned Officers)
Regimental Quartermaster Sergeant (RQMS)- Large Crown with Laurels
(Company) Sergeant Major (CSM)- Large Crown
Regimental Sergeant Major (RSM)- Lion and Unicorn surrounding Small Crown
CO's (Commissioned Officers)
2nd Lieutenant- 1 Pip
Lieutenant- 2 Pips
Captain- 3 Pips
Major- Small Crown
Lieutenant-Colonel- Small Crown and 1 Pip
Colonel- Small Crown and 2 Pips
Brigadier- Small Crown and 3 Pips
Major-General- Crossed Swords and 1 Pip
Lieutenant-General- Crossed Swords and Small Crown
General- Crossed Swords and Small Crown and 1 Pip
Field Marshal- Crossed Swords surrounded by Laurels with Small Crown
The services use different insignia for different ranks. A double silver bar in the army is a captain. In the Navy and the Coast Guard that same insignia is a Lt. Go to www.military.com and they may show you the different insignias.
The British military insignia depicting an eagle holding a lightning bolt is the emblem of the British Army Air Corps. It symbolizes the corps' role in providing air support and conducting aviation operations in the British Army.
Three chevrons, with the points facing down. See related link at the bottom. On their fatigue uniforms I saw them wearing in Afghanistan and Iraq, there would be a tab at the front of their blouse. The rank insignia would be embroidered on a loop, and this tab would be run through that loop. The actual rank insignia used by the Australians is more the same of those used by the British and other Commonwealth Dominion forces - there may be slight variations (such as the Canadian rank insignia, which has the rank of Master Corporal, and incorporates the Canadian maple leaf into the insignia), but the structure follows the British example, and the crown is an ever present feature on the insignia badges of certain ranks, military unit insignia, etc. (note: this only applies to the actual Commonwealth Dominions/Realms, who acknowledge the British monarch as head of state. Not all countries who are members of the Commonwealth of Nations are Commonwealth Dominions, and the crown is absent from their insignia).
Lieutenant Colonel insignia is identified by a Silver Maple Leaf. In the US Army it is a cluster of silver OAK leaves. In the British army it is a crown and a single 'pip'.
Sniper is an Army and Marine MOS. It is not related to rank or paygrade.
See related link "World Uniform Insignias - Israel' at the bottom.
Ranks of the Bangladesh Army was created in 1971.
Amongst the junior ranks, that's the tradition.
Although there are different types of military badges for the US Army, there are no subdivisions for military insignia. The total number of military insignia for the US Army is 57.
The rank is placed on a single rank slide on the front of the breast. The unit insignia is placed on the right arm and is called a Tactical Recognition Flash (TRF)
No, Field Marshall is the highest rank in the army. Even very few get promoted to this.
When an individual first joins the British army, they will be given the rank of officer cadet before they finish training. They might also have the rank of private, depending on where they are training.