In particular, the interactions of Subatomic Particles are described in terms of their interactions with fields, such as the Electromagnetic Field.  However, the fields are quantized and represented by particles, such as photons for the electromagnetic field.  The quantum field theory is Quantum electrodynamics which describes the interaction of electrically charged particles via electromagnetic fields.  Quantum chromodynamics describes the action of the strong force.  A unified theory of electromagnetic and weak forces (also known as the electroweak theory) has considerable experimental evidence, and can probably be used to include the strong force.  Theories that include gravitational force are more speculative.