  Nonlinear non-Abelian Korteweg-de Vries (KdV) and modified Korteweg-de Vries
(mKdV) equations and their links via Baecklund transformations are considered.
The focus is on the construction of soliton solutions admitted by matrix
modified Korteweg-de Vries equations. Matrix equation can be viewed as a
specialisation of operator equations in the finite dimensional case when
operators are finite dimensional and, hence, admit a matrix representation.
Baecklund transformations allow to reveal structural properties [S. Carillo and
C. Schiebold, J. Math. Phys. 50 (2009), 073510] enjoyed by non-commutative KdV-
type equations, such as the existence of a recursion operator. Operator methods
are briefly recalled aiming to show how they can be applied to construct
soliton solutions. These methods, combined with Baecklund transformations,
allow to obtain solutions of matrix soliton equations. Explicit solution
formulae previously constructed [C. Schiebold, Glasgow Math. J. 51, 147-155
(2009)], [S. Carillo and C. Schiebold, J. Math. Phys. 52 (2011), 053507] are
used to obtain 2 x 2 and 3 x 3 matrix mKdV solutions. Some of these matrix
solutions are visualised to show the solitonic behaviour they exhibit
